Tuyere



Patented Nov.. i3, i923..

HENRY F. HILDEBRANDT, OF SAN ANTONIO, TEXAS.

Turnen.

Application le. February 24, 1922. Serial No. 538,986.

T 0 all whom t may concern Be it known that I, Hnnnr F. BRANDT, -a citizen ot the United States, residing at San Antonio, in the countyfo Bexar and State ot Texas, have invented certain new and use/tui tniprovemeuts in Tuyeres, ot which the following is aI specitication.

This invention relates te tuyeres for bla-:Ld iiths hearths and has 'for its object the provision ot simple, inexpensive and eiiicient means wl'ieriy theeuantity ot air Supplied to the tire may be re ilated according to the needs ot e wor being done. Other incidentai objects oi? the invention will appear in the course ot" the Jfollowifig description and the invention resides in certain novel features which are illustrated in the accompanying drawings and will be hereinafter fully `set toi-th.

In the drawings- Figure 1 is a perspective view ot a tuyre embodying my improvements;

Fig. Q is a central longitudinal section of the same;

3 is a front elevation with parts in section;

4 is a horizontal section through the air inlet nozzle. Y

carrying out my invention. I employ a box or body 1 which is connected at its upper end in any convenient or i'ereterred manner with the fire-box 2 and is provided with vertical partitions 3 dividing the interior ot the box or body into a plurality ot chambers lea-ding d irectly into the lire-box. The lower end et' the box or body is normally closed by a door 4 hinged at one edge to the baclr wall of the box. as shown most clearly in Fig. 2, and equipped at its tree edge with a latch 5 consisting o1" a rock shaft iournaled in suitable lugs or bearings 6 upon the door and hen/*ing` a sustaining iinger 7 at its inner end adapted to engage over a. projection 8 upon the box or body 1 so as to support the door against the bottom ot the box and thereby close the same. The rock shaft 5 is extended beyond the end ot the box or body and at its extended end is provided with a handle 9 of any preterret t'orm whereby the latch may be easily manipulated. rlhe walls oi the tire-box are flared upwardly. as shown clearly in Figs. 1, 2 and 3, so that the air delivered to the tire may be allowed to spread and reach all parts of the fire so that combustion will be Y promoted evenly throughout the same. To

regulate and control the admission of air to the tire, I provide, at the juncture ot the box or body 1 and the fire-box, valves 10 consisting of plates extending from end to end of the tlreebox and carried by rock shafts 11 which are journaled in the end walls of the air box or body 1, handles 12 of any preferred form being provided upon one end of the rock shatts so that the valves may be readily set.` As shown most clearly in Fig. 2, the inner or free edges ot the valves approach closely to each other along the center ot the tire-box, as shown at 13, so that, when the valves are in their lowered or closed position, a very thin stream of air will be admitted to the tire. Should it be desired, however, to admit a greater quantity of air to the tire, the valves are tilted upwardly, as indicated by dotted lines in Fig. 2, so that their inner opposed edges will be moved further apart, as will be readily understood.

In the front wall of the air box or body l. I provide openings 14 which are so located that each openingwill communicate with one of the chambers defined by the walls ot the air box and the partitions 3, as clearly shown in Fig. 4, and upon the front wall ot.' the box. I secure a 4forwardly projecting nozzle 15, the side walls ot which converge forwardly, as clearly shown. IVithin the nozzle 15, I provide partitions 16 which diverge from the tron't` end ot the nozzleto the front wall ot the air box and thereby denne supplemental nozzles or passages each leading to one ot the openings 14, as clearly shown. Guideways or cleats 1'? are provided at the rear end of the nozzle and are secured to the front wall of the air box, and a sliding damper or cut-oit plate 18 is mounted in the said guides and disposed between the front wall ot the air box and the rear end ot the nozzle. This damper or cut-ott' plate is provided with an ope-ning 19 corresponding in size and form to the openings 14C and is Jfurther provided with a slot 20, the vertical dimensions of which is the same as the vertical dimension ot the openings 14 and the horizontal dimension of which is such that the said slot may communicate with two of said openings. As shown in Fig. 4, the damper or cut-oit plate 18 is set so that the central opening 1 4 is uncovered by reason of the slot 2O being disposed over the same, while the opening 19 in the damper is set tions of the damper.

damper be slid to the lett so that t-he slot 20 will uncover the left-hand opening 14 without extending beyond said opening to4 the left, the said opening and the central opening 14 will be uncovered and the opening 19 will also be brought into register with the right-hand opening 14, so that all three ot said openings will be uncovered.

The delivery spout of the blower is' connected with the front or entrance end of the nozzle 15, as indicated by dotted lines in Figs. l and 2, and the air blast created by the blower will, therefore, be delivered into the said nozzle and will be divided into a plurality of streams by the partitions 16 and directed. to the openings ,14 to pass through the saine into the air box and thence escape between the valves 1() to the tire. Some work performed by a blacksmith requires only a small volume of air to attain the desired results, while other work requires a greater quantity of air and other work requires a still greater quantity of air. By properly adjusting the slidable damper 18 and the valves or rocking dampers 10, the workman can nicely reg-` ulate the flow of air to the requirements of the particular work being done so that the desired results can be obtained without waste of fuel and without loss of time. My device is obviously simple and inexpensive in construction and may be aptherefrom through the space between the valves or dampers 10 and collected in the Y air box. lVhen the accumulation of cinders is so great as to necessitate their removal, the latch 5 is released from its engagement with `the projection 8, whereupon the weight ot the door 4 and the cinders accumulated thereon will cause the said door to swing Vdownwardly and discharge the cinders into any convenient receptacle placed below the tuyre. It will be readily noted that the construction and arrangement of the several elements of the device are such that a worn out part may be easily replaced without requiring the provision of an entirely new tuyre or the disassembling ot'all the members of the same.

Having thus described the invention, what is claimed as new is:

A tuyre comprising an air box having a plurality ot chambers open at their upper ends and each provided in its front wall with an inlet opening, said inlet openings having the same form and area, a nozzle mounted upon the front wall of the air box and having a plurality of passages each leading to one of the said inlet openings, and a damper slidably mounted across the nozzle at the junction of the same with an air box and provided with an opening of the same orin and area as the said inlet openings, a longitudinal slot having a length sulicient to extend over two inlet openings, and intervening imperforate Vportions whereby any one or more of the inlet openings may be covered or uncovered.

In testimony whereof I aiiixrmy signature.

HENRY E. HILDEBRANDT. [L. s.] 

